Stimulation device



FIG. 1 is a front elevation of a stimulation device showing the design;

FIG. 2 is a right side elevation of the stimulation device of FIG. 1;

FIG. 3 is a perspective view taken from the rear and right side of the stimulation device of FIG. 1; and,

FIG. 4 is a perspective view taken from the front, bottom and left side of the stimulation device of FIG. 1. 

CLAIM The ornamental design for a stimulation device, as shown and described. 